Went to install this upgrade to my Drupal 6 install which includes Drupal Commons, where the original is in a profile.

Put the folder in the Sites/All/Modules folder and ran the update.php file. Got a white screen of death after the second step. Isolated the problem to this upgrade:

6.x-2.x-dev (2013-Sep-30)
Development snapshot of Micropublisher 6.x-2.x which is compatible with the 6.x-3.x branch of FBSS

If nothing else this is a warning to other Drupal Commons on Drupal 6 users. Anyone got ideas on how to debug WSOD on an install?